Hi, there!
+> >
+> > I plan to buy the new SCSI Harddisk with 2 - 4GB capacity.
+> > But, I need some advise from Linux user for this kind.
+> > Which SCSI Harddisk is fastest, best, compatible with Linux and also no
Fastest: I guess, Seagate has the fastest disks currently available. - But
what do you want? If you have a good controller, you will in almost any case
boost your system! (See below)
Best: That's a matter of taste and luck. I've had in almost any case good and
bad experiences with almost every HD-manufacturer. Though IBM, Seagate and Fujitsu
should be the best, IMHO. Go and fetch a disk with 5 Years warranty. Fujitsu
offers a "no comment" warranty for 5 years. If you have any troubles, just
send it to them. But I guess, this goes for the others also, meanwhile.
Compatible with Linux: Each and every SCSI-Disk.
+> > problem with RTLINUX kernel.
RT-Linux: I don't know. But there should be no problem.
+> Any scsi disk should work fine. its usually a matter of perference. Most
+> people like Seagate, as they seems to have the largest drives, with very
+> good specs, though they do tend to run on the hot side. (At least their 4
+> gig drives did..) I use Western Digital wde9100w's which are 9.1gig
+> ultra-wide scsi-3. they are quieter, faster and run cooler than the
+> seagates I've used. plus their warrantee is better. (call em, give em the
+> numbers, and a new drive is overnighted to you, in most cases..)
+>
+> > Thank you for your kind attention.
+>
+> as for the controller. the NCR/symbios logic ones are low cost, and fast,
+> and i believe the linux kernel driver supports the Ultra-2 versions of the
+> cards. ICP-Vortex and DPT and Mylex/buslogic make RAID cards supported by
+> linux.
+>
+> dave
+>
+>
To sum up my personal configuration: I have an Dual-PPro with 200 MHz and
an ASUS SC875, which is identical to the Symbios Logic 875. I have 128 MB RAM
and I have a Fujitsu 4 GB SCA-2 (Ultra-Wide-SCSI) Disk with 7200 rpms and
about 512 Kb Cache.
I tell you what: Under Linux 2.1.119, with the current Symbios Logic Driver,
I tested this Disk with "bonnie". "hdparm" tells the disk makes about 9 MB/s,
which is true for a sustained performance. For "simple jobs", which means
files below 50 MB in size, this system will simply knock hard to the hardware
restrictions.
Writing is possible with about 40 MB/s (The "bottleneck" of the ULTRA-Wide-SCSI-Bus),
and reading is possible with up to 133 MB/s, which is the "bottleneck" of the
PCI-Bus. Bonnie tells me also that the system can make about 8000 seeks per
Second, which keep the System for 198% busy, which means to me, that the
CPU-Speed is the limit here, and both CPUs are fully stressed with that single
disk!
This performance drops slowly down when you let the file sizes grow and when
you have files with 200-500 MB in size, you will reach an overall performance
of the 9 MB/s the disk really has.
My next step will be that I put two of the Fujitsus together to form a little
striped Diskarray (RAID 0). I hope, I can keep up the good throughput then for
a while longer.
If you are interested, I can give you the exact numbers.
I ask myself, who actually needs even faster disks, like the ones from
Seagate, with 10.000 rpms and 11 MB/s official troughput? - Maybe when you have
a more potent system, not a PC. ;-))))
Best regards,
Herbert
Herbert Wengatz Private email: [EMAIL PROTECTED]
>>One of the best-kept secrets here at.. [Microsoft] ..is the widespread
use of UNIX by a variety of developers in a variety of circumstances.
"There are definitely a lot of people here who use LINUX," Chapman says
flatly. << from: http://www.microsoft.com/ie/unix - Click on: "UNIX devs
in Microsoftland" (lower right corner). An article in which Microsoft
claims that they will get UNIX "out of the Microsoft door" and proove
that they do the contrary thing.
